Roller shoes

ABSTRACT

As described above, the roller shoes of the present invention have the following structures and functions: the two roller-grooves are at the front and back side of the undersurface of the base of the shoe; the rollers are affixed to the roller-grooves; the roller-shafts of the roller and the roller-shaft supporting grooves are linked by magnetic force so that the roller-shafts of the roller do not separate from the roller-shaft supporting grooves. Because these two rollers are fixed at the front and back side of the base of the shoe, the user can use them like roller skates. And, if he wants use them like usual shoes after using them as roller skates, he can shift their usage from the roller-shoes to common shoes by easily separating the rollers from the roller-grooves.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The invention relates that of roller shoes which have removable rollers on the bottom of the shoes. Briefly, the present invention includes the following: roller-grooves on the front and back of the soles of the shoes and metal roller-shaft supporting grooves onto which magnets are attached. Because the roller-shaft supporting grooves of the roller-grooves and the roller-shaft of the roller are linked by magnetic force, the rollers do not separate from the roller-grooves even if the bottom of the shoes touch a stationary surface.

[0003] 2. Description of the Prior Art

[0004] Generally, in roller shoes, as shown in the FIGS. 1, 2 and 3, roller-grooves (3) are affixed to the undersurface of the back part of the soles of the shoes, which are attached on the lower side of the shoes (1). At the roller-grooves (3), roller-shaft supporting plates (5), which have roller-shaft supporting grooves, have downward openings. Presently, roller-shaft supporting plates (5) that have roller-shaft support grooves (4) on both sides are made by injection molding. Removable rollers (7) have outward protruded roller-shafts (6), which are inserted into the roller-shaft supporting grooves (4), are devised at both sides of the above mentioned roller-grooves (3).

[0005] The use by a user of roller-shoes can be divided into two categories of the usage, i.e., as shoes and as roller shoes. When a user wants to use them only as shoes, he can use them as shoes by not inserting the rollers (7) onto the roller shoes. If a user wants to use them as roller shoes, wherein the user can slide down a sloped hard surface by means of the rotating rollers (7), the user lifts up part of the shoes (1), sticks rollers (7) that are devised to fit into the roller-grooves (3).

[0006] Because the roller-shafts (6) of the rollers (7) of conventional roller shoes are inserted to the roller-shaft supporting grooves (4) but inserted loosely into them, if the shoes (1) are lifted, the roller-grooves (7) can be separated from the roller-shaft supporting grooves (3) so that it becomes impossible to use them as roller shoes and to ascend up the slope or glide on a flat surface.

SUMMARY OF THE INVENTION

[0007] These and other problems of the prior art are eliminated or mitigated by the present invention directed to roller shoes, which have removable rollers on the base of the shoes. In detail, the present invention includes the following: roller-grooves in the front and back of the soles of the shoes and metal roller-shaft supporting grooves onto which magnets are attached. Because the roller-shaft supporting grooves of the roller-grooves and the roller-shaft of the rollers are linked by magnetic force, the rollers will not separate from the roller-grooves even if the bottom of the shoes touch a hard surface.

[0008] The present invention has the following structural characteristics: semicircular roller-grooves (3) are made on base of the soles (2); the roller-shaft supporting plates (5) which have semicircular openings on both the left and right lower sides, and are affixed at the roller-grooves (3); removable rollers (7) which have outward protruded roller-shafts (6) are inserted into the roller-shaft supporting grooves; the two roller-grooves are made on the front and back sides of the undersurface of each base piece (2); the magnet-grooves (9) are made on both edges of the above mentioned roller-shafts (6); magnets (8) are inserted into the magnet-grooves (9); the above mentioned roller-shaft supporting grooves are made of metal and the roller-shaft supporting plates (5) which include the roller-shaft supporting grooves (4) are also made of metal.

[0009] Also, instead of the roller-shaft onto which magnets (8) are affixed, and instead of the whole roller-shaft supporting grooves (4) and the roller-shaft supporting plates (5) being made of metal, the roller-shaft (6) can be made of metal and the roller-shaft supporting grooves (4) can be include magnets is the other exemplary embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The aforementioned aspects and other features of the present invention will be explained in the following description, taken in conjunction with the accompanying drawings, wherein:

[0011]FIG. 1 is the enlarged perspective view in which the major parts of the roller shoes are extracted and illustrated.

[0012]FIG. 2 is the partially cross-sectional side view in which the important parts of the roller shoes are illustrated.

[0013]FIG. 3 is the view of the undersurface of the present invention that is illustrated by the FIG. 2.

[0014]FIG. 4 is the cross-section view in which the metal roller-shaft supporting grooves and the magnets fixed on the roller-shaft are illustrated, as an exemplary embodiment.

[0015]FIG. 5 is the cross-section view in which the metal roller-shaft and the magnets, fixed on the roller-shaft supporting grooves are illustrated, as an exemplary embodiment.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0016] The present invention will be described in detail by way of preferred embodiments with reference to accompanying drawings.

[0017] The present invention is contrived and proposed to solve the above mentioned problems. The purpose of the present invention is to be able to use roller shoes like roller skates and to use them as usual shoes by separating the rollers easily from the roller-grooves if the user wants. To fulfill these purposes, the present invention have the following features: roller-grooves at the front and back side of the base of the shoes; the metal roller-shaft supporting grooves on which magnets are attached, wherein the roller-shaft supporting grooves of the roller-grooves and the roller-shaft of the rollers are linked by magnetic force.

[0018] The present has the following structural characteristics: the roller-shaft supporting plates which have semicircular openings on both their left and right lower sides and are affixed at the roller-grooves; the removable rollers which have outward protruded roller-shafts are inserted into the roller-shaft supporting grooves; the two roller-grooves are made on the front and back sides of undersurface of the each base piece; the magnet-grooves are made on both edges of the above mentioned roller-shafts; the magnets are inserted and devised in the magnet-grooves; the above mentioned roller-shaft supporting grooves are made of metal; the roller-shaft supporting plates which include the roller-shaft supporting grooves are also made of metal.

[0019] Also, instead of the roller-shaft onto which magnets are fixed, and instead of the whole roller-shaft supporting grooves and the roller-shaft supporting plates being made of metal, the roller-shaft can be made of metal and the roller-shaft supporting grooves can be made of magnets, is the other exemplary embodiment.

[0020] Below is the description of the present invention of roller shoes which is referred to in FIGS. 4 and 5.

[0021]FIG. 1 is the enlarged perspective view in which the important parts of the roller shoes are extracted and illustrated. FIG. 2 is the partially cross sectional side view in which the important parts of the roller shoes are illustrated. FIG. 3 is the view of undersurface of the present invention that is illustrated by the FIG. 2. FIG. 4 is the view of cross section in which the metal roller-shaft supporting grooves and the magnets fixed on the roller-shaft are illustrated, as an execution example. FIG. 5 is the view of the cross section in which the metal roller-shaft and the magnets are affixed to the roller-shaft supporting grooves are illustrated, as an execution example.

[0022] The first execution example of the present invention, as shown in the FIGS. 2 and 4, is as follows: the roller-grooves (3) are made on the undersurface of the shoes' base pieces (2); the roller-shaft supporting plate (5) that have the roller-shaft supporting grooves (4) which their both sides of lower parts are opened and channeled as like semicircle; the removable rollers (7) which have the outward protruded roller-shafts (6) are inserted into the roller-shaft supporting grooves; the two roller-grooves are made on the front and back sides of undersurface of the each base pieces (2); the magnet-grooves (9) are made at the both edges of the above mentioned roller-shafts (6); the magnets (8) are inserted and devised in the magnet-grooves (9); the above mentioned roller-shaft supporting grooves are made of metal; or, the roller-shaft supporting plates (5) which include the roller-shaft supporting grooves (4) are made of metal.

[0023] Also, instead of the roller-shaft magnets (8) being fixed, and instead of the whole roller-shaft supporting grooves (4) and the roller-shaft supporting plates (5) being made of metal, the way that the roller-shaft (6) is made of metal and the roller-shaft supporting grooves (4) are made of magnets is the second execution example.

[0024] The ‘A’ in the FIGS. 4 and 5 refers to the uneven part which is made to prevent the roller-shaft supporting plate (5) that is molded and combined with the shoes' base pieces (2) from being separated from the base pieces (2).

[0025] The assembling and functions of the present invention are explained by referring to FIGS. 1 and 5, as follows.

[0026] The roller shoes of this present invention can be used not only as common shoes but also as roller shoes.

[0027] If the user wants use these only as usual shoes, he can do so by not using the rollers (7) at the roller-grooves (3). If the user wants use these as roller shoes, the user should merely insert the rollers (7) into the roller-grooves (3), as shown in the FIGS. 2 and 5, so that the rollers (7) can be rotated at the roller-grooves (8) of the base pieces (2) and he can use them as roller-shoes.

[0028] In this present invention, as like the first execution example in the FIG. 4, because the roller-shaft supporting plates (5) that have the roller-shaft grooves (4) and the roller-shaft supporting grooves (4) that are supported by roller-shaft (6) are entirely made of metals, if the user insert the rollers (6) at the both sides into the semicircular roller-shaft supporting grooves (4) that have the openings down the roller-shaft (6) and the roller-shaft supporting groove (4) are combined with each other by the magnetic force of the magnet (8) that is fixed at the roller-shaft (6).

[0029] Though the user lifts his or her foot to walk and the undersurface of the rollers (7) are separated from the earth at a certain interval, the rollers (7) are not separated from the roller-grooves. It is because the roller-shafts (6) are attached on the roller-shaft supporting grooves (4) by magnetic force that the above separation does not occur. At this state, if the user puts a foot on the earth and slides the other foot towards the going direction as like roller skating, the rollers comes to rotate and the user can run as like he rides on roller skates. It is because the pushing force of one foot is larger than the magnetic force which makes the roller-shaft (6) to be attached on the roller-shaft grooves that this sliding is possible.

[0030] And, in this present invention, because the two rollers (7) are located on the front and back sides of the undersurface of base pieces (2), respectively, the problems that because only a roller are fixed at the back undersurface of base pieces in conventional roller shoes, the user should slide with his front part of foot being lifted are solved. So that it is possible for the user to slide freely with the roller shoes as in roller skating.

[0031] Like as the above description, when the rollers (7) are rotating, the roller-shaft (6) are continuously rubbed with the roller-shaft supporting grooves (4) so that the exterior surface of the roller-shafts (6) and the roller-shaft supporting grooves (4) are worn away. Considering this problems, the present invention is contrived to make the exterior surface of the roller-shaft (6) and the roller-shaft supporting grooves of metal which are resistant to the abrasion, and to insert the magnet that is apt to be worn away into the inside of the magnet-groove (9) which is made at the roller-shaft (6) so that it is possible to prevent the magnet (8) from being worn away.

[0032] If the user wants to shift its usage from the roller shoes to usual shoes, it is necessary only to separate the rollers (7) from the roller grooves (3). At this time, because the magnetic force that combine the roller-shafts (6) of the roller (7) with the roller-shaft supporting grooves (4) is not large, it is possible to separate the rollers (7) from the roller-shaft supporting grooves (4) only by small force that separate them by hands, and then to carry them with one, for instance.

[0033] Also, in the case of the second exemplary embodiment shown in the FIG. 5, its usage is same as the case of the first exemplary embodiment in the FIG. 4. A difference is the magnet's location and the materials of components. While the magnets (8) are fixed at the roller-shafts (6) and the roller-shaft supporting grooves (4) are made of metals in the case of the first execution example, the magnets are not fixed at the roller-shafts (6) that are made of metals, but at the roller-shaft supporting grooves (4) in the case of the second execution example. Because actions of the two cases are the same with the case of the first example, the concrete description of the action in the second example is omitted here. 

What is claimed is:
 1. Roller shoes, including: roller-grooves on the undersurface of the shoes' base pieces; roller-shaft supporting plates, which have semicircular openings at both left and right lower sides, fixed at the roller-grooves; and removable rollers, which have outward protruding roller-shafts, and which are insertable into the roller-shaft supporting grooves, wherein the roller-grooves are located on the front and back sides of the undersurface of the each base pieces; wherein magnet-grooves are located at the both edges of the roller-shafts and magnets are inserted in the magnet-grooves; and wherein the roller-shaft supporting grooves are made of metal.
 2. Roller shoes in accordance with claim 1, wherein the roller-shaft supporting plates are made of metal.
 3. Roller shoes, including: roller-grooves on the undersurface of the shoes' base pieces; roller-shaft supporting plates, which have semicircular openings at both left and right lower sides, fixed at the roller-grooves; and removable rollers, which have outward protruding roller-shafts, and which are insertable into the roller-shaft supporting grooves, wherein the roller-grooves are located on the front and back sides of the undersurface of the each base pieces; wherein the roller-shafts are made of metal; and wherein the roller-shaft supporting grooves are made of magnets. 